Houston Solar Plan Sets

Avila Solar Drafting draws permit-ready solar plan sets for installers working in Houston, unincorporated Harris County and the surrounding metro — Sugar Land, Pasadena, Katy, Pearland, The Woodlands, Baytown and Conroe. A standard set ships in 2–3 business days once intake is complete, and revisions stay free for six months. Houston sets are assembled against the submittal list the reviewing authority actually publishes, not a generic national template.

Key takeaways

• 2–3 business days standard, 1–2 on Fast Roof, and 1 business day where Fast Roof is paired with a Roof Order or EagleView XML.
• Revisions are free for six months from the order date.
• A Houston package is more than drawings. The city’s own guide asks for a code analysis sheet, PE-sealed structural documentation and an address-specific wind speed printout alongside the plans.
• Two authorities share one metro. The City of Houston and unincorporated Harris County permit separately, through different portals — the address decides which one reviews the set.
• Delivery is a submittal-ready PDF package plus source files, so a revision never means redrawing.

What ships in a Houston solar plan set

The City of Houston publishes its expectations in CE-1198, the Solar Photovoltaic Panel Permit & Inspection Guide, revised March 2024. It is unusually specific about what a reviewer wants to see, and a Houston set is built to answer it item by item:

• Cover sheet, sheet index and a code analysis sheet — Houston asks for the code analysis as its own element, naming the editions the design was worked to rather than leaving a reviewer to infer them.
• Site or plot plan carrying panel locations and measured distances to every property line, plus the service point and equipment placement.
• Roof plan with the array layout, mounting and rail locations, fire access pathways, and — a Houston-specific ask — the roof penetrations that already exist.
• Electrical drawings demonstrating Article 690 compliance and listed equipment, with conductor and overcurrent sizing, grounding and the interconnection method shown.
• Structural letters, calculations and details sealed by a Texas Professional Engineer wherever the array adds load to the structure.
• An address-specific basic wind speed printout from the ASCE 7 Hazard Tool, included in the set rather than left for the reviewer to look up.
• Placards and the labeling schedule matched to the enforced cycle.

The sheet-by-sheet breakdown that applies to any jurisdiction is on what’s in a plan set. The submittal mechanics — which review track a Houston address qualifies for, which portal it goes through, and where the filing boundary sits — are covered on our Houston permit design page.

Turnaround, and what the clock waits on

A standard Houston set is 2–3 business days. Fast Roof compresses that to 1–2 business days, and to 1 business day where it is paired with a Roof Order or an EagleView XML file.

Those numbers count from the point the intake is complete, which is a different moment from when the order is placed. Complete means survey data, an equipment list with model numbers, existing service and panel details, and roof measurements. In Houston there is one extra item worth confirming at intake rather than mid-draft: whether the structure is being reviewed against the residential or the commercial building code, because it changes what the structural package has to look like. Our site survey checklist is the sheet our designers work from, and crews are welcome to use it in the field.

Revisions, and the review your set passes before you see it

Every order carries six months of free revisions from the date it was placed. Plan review comments, an equipment swap, a site condition that turned out differently than surveyed — all of it lands inside that window at no additional cost, and none of it opens a new order.

Before a Houston set reaches you it goes through a senior designer who did not draw it, checking code citations, sizing and consistency from sheet to sheet. We guarantee accurate solar plan sets, drawn to the electrical and building code requirements of your specific jurisdiction and designed to pass first-time review. An approval is the reviewer’s decision and we won’t pretend otherwise — what we control is whether the package hands them a reason to reject it. The pre-submittal checks we publish are worth running against any set, ours included.

Which code cycle a Houston set is drawn to

Houston enforces the 2023 NEC alongside either the 2021 IRC or the 2021 IBC, depending on the structure. That is a cleaner picture than the Dallas–Fort Worth metro, where neighbouring cities sit on three separate electrical adoption dates — but it is not the end of the question, because unincorporated Harris County enforces its own amendments and the surrounding incorporated cities each adopt independently.

Statewide, the Texas Department of Licensing and Regulation has proposed adopting the 2026 NEC effective September 1, 2026, published in the Texas Register in March 2026. Final adoption is not yet confirmable from the codified rule, so we treat that date as expected rather than settled and confirm it at intake — and cities follow on their own ordinances rather than together, whatever the state does. Sets drawn near that boundary get flagged at intake so the cycle on the cover sheet matches the one the set will actually be reviewed under. The statewide picture is on our Texas solar plan sets page.

CenterPoint, and the second approval nobody schedules for

Most of the metro is CenterPoint Energy territory, and CenterPoint interconnection runs as a separate approval from the city or county permit. The two tracks are not independent in sequence: CenterPoint’s own guidance is that where a permit is required, its visual inspection is not processed until the local inspection has passed, and the system is not energized until both are clear.

That matters for the drawing, because the interconnection application travels with the submittal and the AC disconnect has to be drawn where CenterPoint expects to find it. We show it in a compliant location on both the site plan and the single-line diagram. The device selection and the placard rule behind that decision sit on our Houston design and drafting page.

What moves the price of a Houston set

Cost tracks scope rather than postcode. The variables that move it are roof complexity and plane count, whether a main panel upgrade or line-side tap is in play, whether storage is part of the design, whether the array is roof-mounted or a ground mount, and whether the structural scope pulls in a sealed engineering package. Houston adds one more lever than most metros: an address that falls into the higher wind band brings structural documentation that a milder site would not need. Supplying a Roof Order or EagleView XML remains the single biggest saving on both price and schedule. Current figures per product line live on the solar plan sets page.

Houston-area jurisdictions we draw for

City of Houston, unincorporated Harris County, Sugar Land, Missouri City, Pasadena, Pearland, League City, Katy, Cypress, Spring, The Woodlands, Conroe, Baytown, Deer Park, Friendswood, Stafford, Tomball, Humble, Richmond and Rosenberg. Each one is confirmed per order rather than assumed — the adopted cycle, the amendments and the submittal route all get checked before drafting starts. Portfolio examples are on our portfolio page.

Houston Solar Plan Sets FAQs

Order a Houston plan set

Drafting capacity is usually what sits between a signed Houston contract and a crew on a roof. We draw to the reviewing authority’s adopted cycle, assemble the supporting documents CE-1198 names, ship in 2–3 business days, and revise free for six months.

Or call 971-410-0655 if you want a jurisdiction checked before you order. Avila Solar Drafting LLC, 11995 SW Walker Rd, Beaverton, Oregon · 971-410-0655 · info@avilasolar.com. We draft for Houston installers from our Beaverton office — there is no Texas branch.